You're using an ancient browser to surf the modern web. Please update to the latest version (and don't use Internet Explorer!).
Leonardi.DB
a logical geometry project
Pedro de Oña (°1560, †1626)
Also known as
de Ona, Pedro
Pedro de Oña authored the following 1 source, containing a total of 3 diagrams.
Oña, Pedro de. 1593. Dialecticae introductio, quam vulgo Summulas, seu Parua logicalia, vocant, cum argumentis. Burgis: Alphonsus Rodriguez. (3 diagrams)
